What Is Mercury Made Of? Mercury, the planet, has a solid core containing iron, a magnetic field and silicone. Find out why Mercury has no atmosphere with help from a science teacher in video on physical science. (02:38)

A brief look at The Planet Mercury (Now in HD) and some interesting facts. This video includes images and new video from the messenger probe. Music 'Musica Universalis' by the great Mike Oldfield. (06:27)

Explore the sullen planet of Mercury, where extremes are the rule in this short, computer-animated video. The following concepts will be briefly addresses: Mercury's orbit, tidal coupling, Mercury's interior and size, lobate scarps, the atmosphere o...f Mercury, and Mercury's lack of moons. The video ends with a 10-question, fill-in-the-blank quiz.[more]

Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 days. The orbit of Mercury has the highest eccentricity of all the Solar System planets, and it has the smallest axial tilt. (04:30)

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